Quick-acting pressure-seated valve.



J. P. FRASER.

QUICK ACTING PRESSURE SE'AT ED VALVE APPLICATION FILED NOV-20.1915.

1,200,184. Patented Oct. 3, 1916.

I lma/"110v Walk woo Jbseph Fraser" UNITED STATES PATENT @FFTQE.

JOSEPH P. FRASER, 0F BIRMINGHAM, ALABAMA, ASSIGNOB OE FORT Y ONE- HUNDBED'IHS 'IO MARY S. SANFORD, OF BIRMINGHAM, ALABAMA.

Specification of Letters Patent.

PatentedOct. 3, 1916.

Application filed November 20, 1915. Serial No. 62,573.

To all whom it may concern:

Be it known that I, JOSEPH P. FRASER, a citizen of the United States of America, residing at Birmingham, in the county .of Jefferson and State of Alabama, have invented certain new and useful Improvements in Quick-Acting Pressure-Seated .Valves, of which the following is a specification.

My invention relates to quick acting pressure seated valves which are especially adapted for use in connection with pressure gages, fire extinguishers and the like.

One object of my invention is to design a valve'which is simple in. construction and in which the valve and a sleeve forming its seat are readily removable together from the valve casing.

A further object is to so design the removable sleeve seat for the valve that it will re quire no special adjustment of its port in the casing and hence the valve and its seat may be assembled and screwed into the easing until they close the fluid inlet port of the casing and the valve will be operable from any position that the seat may happen to assume, it beingonly necessary that the relative positions between the ports of the valve and its seat shall be preserved.

A further featureof my invention relates to the shape of the valve and the manner in which it gives access for the steam or fluid pressure to its seat port. In its preferred arrangement the valve is shaped like a frustum at the inner end of a cylindrical body which has at its outer end a reduced operating stem and at its inner end a port leading axially and then diagonally through the valve. The valve seat is formed by a sleeve or bushing which traverses the chamber in the valve casing and has at its inner end ataper socket forming a seat for the taper valve, there being a portin this seat adapted to register with the valve port. Spring means are also preferably provided to act in the direction of the pressure .to maintain the valve always seated. The port in the valve seat opens into an annular groove out about the middle of its sleeve seat and this is always in register with the outlet port or ports of the valve casing regardless of the position of the sleeve port about the axis thereof.

My invention further comprises the novel details of construction and arrangements of parts which in their preferred embodiment are hereinafter described and illustrated in the accompanying drawings, 'in which Figure l is anelevation of the valve casing which with the valve sleeve are broken away to show-the valve in elevation. Fig. 2 is a detail ,viewof the valve sleeve seat and the parts to be mounted thereon ready to be assembled.

Similar reference numerals refer to similar parts throughout the drawings.

In the embodiment of my invention illustrated, I show a three-way valve casing 1 having its top branch 2 with an outlet port leadingto a water gage glass 3, a bottom branch 4 with an outlet port leading to a blow-oil connection 5, and a third branch 6 forming a boiler connection 7 and having the inlet port therein. The inlet port is provided with two internal annular shoulders 8 and 9, the latter having its face smooth so as to form a seat for the inner end of the valve sleeve 10. The taper valve 11 fits snugly in a taper valve seat 12 in the inner end of the valve sleeve 10. A coiled spring. 13 seats against the shoulder 8 and bears against the inner end of the valve 11 which has a cylindrical extension 14 forming a guide for the spring. The inlet port through the valve is formed by a passage 15 extending axially through the spring guide 14: and into the-taper valve and there communicating with a port 16 leading at an acute angle through the taper valve face and adapted to register with a port 17 in the valve seat. It will be noted that this port 17 opens into an annular channel 18 surrounding the sleeve 10. The ungrooved end portions of the sleeve are cylindrical and externally threaded and the casing 1 isprovided with a threaded opening 19 opposite its inlet port and through which the sleeve is screwed and threads are provided in the inlet port adjacent to the shoulder 9 so that the inner end of the sleeve can be screwed thereinto and against the shoulder 9 to furnish a pressure tight fit therefor in the easing. The ends only of the sleeve being in engagement with the casing, a clearance is provided surrounding its intermediate grooved portion. An enlarged polygonal shaped portion 20 is formed on the outer end of the sleeve 10 and beyond the enlarged portion is a rounded reduced portion 21 having a flat face 22. Beyond the reduced portion 21 the sleeve is further reduced and threaded at 23 and still further reduced and threaded at 24. I/Vhen the sleeve has been screwed home into the casing by means of the portion 20, a positive stop quadrant 25 on a bracket 26 is attached in fixed relation on the sleeve by fitting the ring 27 on the bracket over the shoulder 21 and providing a fiat face in the ring to engage the fiat face 22 of the shoulder. A nut 28 is then run onto the threaded portion 23 to lock the quadrant in position and a gland 29 is screwed on the threaded portion 2 1 to suitably pack the stem of the valve. This stem passes into the valve sleeve and connects to the cylindrical body portion 31 of the valve. A handle 32 is made fast on the outer end of the stem in position to work between the upper stop lug 33 and the bottom stop lug 34 of the positive stop quadrant 25, and these stops serve to stop the valve after full opening or closing movements.

All of the parts having been assembled in the manner described and it being noted that the channel 18 of the valve sleeve is always in register with both outlet ports of the valve casing, the pressure acting against the flaring end of the taper valve and cooperating with the spring 18, will bring about and maintain a tight seating between the valve and its taper seat. The quadrant holds the valve in predetermined relation with its sleeve 10 and the two are assembled and screwed together into the casing, it being immaterial that the sleeve should be adjusted to any special position when it is screwed home against the shoulder 9 since its port 17, through the channel 18, will al ways be in communication with both the gage glass 3 and the blow-off connection 4.

The valve can be manipulated rapidly and can be readily removed and reinserted for cleaning or repair without requiring any accuracy of adjustment. Moreover the valve has a minimum number of parts for the service contemplated and with practically no wear will afford a quick acting and tight seating valve under all operating conditions.

I/Vithout intending to limit myself to the preferred details of construction illustrated, what I claim as new and desire to secure by Letters Patent, is

1. In a valve of the character described, a casing having a barrel comprising a threaded portion of substantially uniform diameter opening through one end of the casing and communicating at its other end with a reduced spring chamber which communicates with a concentric inlet port, a valve seat externally threaded and adapted to be screwed into said barrel, which has an terminating at said outlet port leading from an intermediate point, a stop shoulder at the inner threaded end of the barrel against which said valve seat engages with a butt-joint, said seat having an annular groove around it which registers with said outlet port when the seat is screwed home, a taper valve seated in the inner end of said valve seat and adapted to engage said shoulder, said valve having a stem projecting in one direction through the valve stem and without the valve casing and having a short ported valve stem projecting in the other direction into said reduced chamber, there being a port extending through said short stem and through the valve and there being a registering port leading through the valve seat into the annular groove surrounding the same, and a spring seated in said reduced chamber and surrounding the valve stem extension therein, said spring leaving the inlet passage unobstructed for the flow of fluid through the valve and its seat.

2. In a valve of the character described, a casing having inlet and outlet ports and an opening opposite the inlet port, a spring chamber forming an enlarged continuation of said inlet port and a threaded seat forming an enlarged continuation of said valve chamber, a valve sleeve extending through said opening and screwed into the threaded seat in the casing with its inner end seated pressure tight against the inner end of said seat, said sleeve having a taper valve seat in its inner end and a port opening from said seat through an intermediate portion of the sleeve, a taper valve seated in said tapered seat in the sleeve, an operating stem for the valve projecting through a suitably packed opening in the outer end of said sleeve, a guide sleeve extending from the valve into said spring chamber and having a port opening through its end and the valve and adapted to register with said seat port, and a spring seated in said spring chamber surrounding said guide sleeve and co-acting with the pressure to force the taper valve against its seat.

3. In a valve of the character. described, a valve casing comprising inlet and outlet branches at right angles to each other and having an opening in line with the inlet branch, said casing comprising a barrel of uniform diameter internally threaded and terminating at its inner end in a right angled shoulder, an inlet port in said inlet branch having at its inner end an enlarged spring chamber disposed in line therewith shoulder, a valve seat comprising a cylindrical externally threaded portion adapted to screw into said barrel and against said shoulder, said seat having an intermediate surrounding groove which registers with the outlet port in said outlet branch of the casing, said valve seat having a taper socket at its inner end and a in said chamber and adapted to hold the port leading therefrom into its grooved porvalve seated Without interfering With the tion, the inner end of the valve being flow of fluid through the port in the valve. 10

adapted to lap the shoulder, a Stem con- In testimony whereof Iaifix my signature. 5 neoted to the outer end of the valve and JOSEPH P. FRASER.

passing through said valve seat to a point Witness:

Without the valve casing, and a coiled spring N OMIE WELSH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents,

Washington, D. 0. 

